H.b. Fuller Licensing & Financing Inc.

Yi Wei

Youlu Duan

Yuduo Zhu

Sonja E Stammler

Michael J Maksymkiw

Wayne P Miller

Brian L Marty

Douglas Ulen Gwost

Gary J Haider

Ronald R Davies

Catherine A Wenz

A method for the preparation of sulfonated polymer compositions wherein water dispersible isocyanate-terminated polyurethane prepolymers are reacted in the presence of aqueous polyvinyl dispersions which may contain active hydrogen atoms. The invention is further directed to a water-based sulfonated polyurethane polyvinyl hybrid latex wherein a sulfonated polyurethane is used as a seed for the polymerization of ethylenically unsaturated monomers and a method for preparing the same. The inventive compositions develop interpenetrating polymer networks or may form core-shell type structures, and are characterized as having enhanced mechanical and adhesion properties.

Water-based sulfonated polymer compositions

The present invention discloses a stable aqueous polyurethane dispersions comprising a reaction product of a water dispersible isocyanate-terminated polyurethane prepolymer (A), an aqueous polyurethane dispersion (B) and water, and a method wherein a water dispersible isocyanate-terminated polyurethane prepolymer (A) is dispersed in at least one aqueous polyurethane dispersion (B) and water, and reacted at about 35.degree. C. to about 95.degree. C. until substantially free of isocyanate. The inventive dispersions are useful in adhesives, coatings, binders, primers and sizers.

Stable aqueous polyurethane dispersions

The present invention is directed to aqueous polyurethane dispersions and aqueous polyurethane-acrylic dispersions, especially polymer dispersions formed from norbornane diisocyanate. The dispersions, and the dried polymers therefrom, are useful adhesives that provide enhanced bond strength when subjected to increased thermal and mechanical stress. Additionally, the inventive dispersions form polymers having increased adhesion compared to similar polymers based on cycloaliphatic diisocyanates which are free of a methylene bridge.

Aqueous polyurethane dispersions formed from polyisocyanates having a

A latex comprising a free radically polymerized product, said product comprising at least two ethylenically unsaturated monomers, at least one of said monomers having an isocyanate group which is sterically hindered or blocked and at least one other of said ethylenically unsaturated monomers being free of isocyanate functional groups, in an aqueous emulsion in the presence of a free-radical polymerization catalyst, in a manner such that the sterically hindered or blocked isocyanate groups distribute in the outer layer of the latex particle and the method of making such.

Structured reactive latex

A method for the preparation of sulfonated polymer compositions wherein water dispersible isocyanate-terminated polyurethane prepolymers are reacted in the presence of aqueous polyvinyl dispersions which may contain active hydrogen atoms. The inventive compositions develop interpenetrating polymer networks, which may form core-shell type structures, and are characterized as having enhanced mechanical and adhesion properties.

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Saint Paul, MN, United States of America

Yi Wei